identification

hi all
how can i identify which year is the make or model of my silverwing?? i know they all look the same with slight differences but is there a way to identify what's the model of this or that bike?? ...if there's a number on the chassis or the engine which can tell , where can i find this number ?
thanks

OK, Here is the thread.

https://www.silverwing600.com/maintenance-tips-and-hints-f7/useful-silverwing-number-locations-t186.htm?highlight=numbers

thanks for your reply ...but how can i identify the manufacturing date from the number? is there any formula ?

GIVE THIS THREAD A TRY:

http://www.motoverse.com/tools/vin/honda.asp

Just enter your Scooters VIN

thx m8